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https://issues.apache.org/jira/browse/AMQ-5578?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Christian Posta reopened AMQ-5578:
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reopening...
patch does preallocate, but uses sparse file, and does not show any improvement
in performance. working on patch here to allow strategy to use preallocated
journal files or to batch preallocation depending on need here:
https://github.com/christian-posta/activemq/commit/db1335d5883a4943c7d1cb6cef21d534676cafbb
patch still in flux
> preallocate journal files
> -------------------------
>
> Key: AMQ-5578
> URL: https://issues.apache.org/jira/browse/AMQ-5578
> Project: ActiveMQ
> Issue Type: Improvement
> Components: Message Store
> Affects Versions: 5.11.0
> Reporter: Gary Tully
> Assignee: Gary Tully
> Labels: journal, kahaDB, perfomance
> Fix For: 5.12.0
>
>
> Our journals are append only, however we use the size to track journal
> rollover on recovery and replay. We can improve performance if we never
> update the size on disk and preallocate on creation.
> Rework journal logic to ensure size is never updated. This will allow the
> configuration option from https://issues.apache.org/jira/browse/AMQ-4947 to
> be the default.
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